No power When I press power button.- Battery is full

it sounds like you have a bad battery. replace it.

The orange light indicates its stuck in charging mode.
Hold volume down and power for 15 seconds, you should see the bottom buttons flash a few times and it will go into recovery mode.
Use volume keys to highlight restart phone and press power once.

1.Check the device's battery level for at least two bars of strength.
2.If the battery level is low, charge the battery.
3.If the issue is not resolved, remove the back cover.
4.Remove the battery.
5.Wait 10 seconds.
6.Press and hold the W key.
7.While pressing down the W key, re-insert the battery.
•The device restarts and after approximately 15 seconds, the 'Recovery' screen appears
•Release the power button but *continue holding the home button*, for another 30 seconds.
Step
Thanks

you contact the mobile service provider........

FOR HTC wildfire
Do a hard reset:
Please note that all data will be deleted from the HTC Wildfire as a result of this procedure. This process does NOT delete data stored on the microSD card. We recommend backing up all of your personal data before proceeding.
1. Turn the power off. If your HTC Wildfire is frozen, pull the battery out and reinsert it
2. Hold the Volume Down button
3. Press and release the Power button
4. You are now presented with a menu that allows for Fastbook, Recovery, Clear Storage, and Simlock
5. Select Clear Storage by pressing the Volume Down button
6. Press and release the Power button
7. Now simply confirm your decision: Volume Up for YES and Volume Down for NO

If you selected YES, all data including third-party applications will be deleted from the HTC Wildfire.

Once the wipe is complete, the phone will reboot to its factory fresh state.

Have you press the button for about 3-5 seconds and are you sure that it is the right button ??

You want to sell it? mail me at [email protected]

One replace the battery.
2 when you get your new battery for the first time charge it for almost 24/hrs
over the next week use it till its almost dead then charge it at night from about 10 or 11 at night till you wake up the next morning. You may have killed you battery by not doing this in the first place.

Try changing ur battery if it doesnt help then do this

try pressing the reset button near the charging port on the pda if it doesnt work try to hard reset it as follows

try this if it helps

hard rest factory default settings = when ur set is switched off press both buttons call and end key and then press power button on upside of pda for like 5 sec screen will appear asking to format all data take out ur card if u dont want to format that now confirm by pressing the centre action button in 4 side joystick and go

if not solved then go to www.htc.com for latest Rom update downlaod and update

other wise check xda forums for software dead HTC http://forum.xda-developers.com/

pls do rate me if i fixed ur problem

I called and spoke to HTC ..apaprently there are issues with some of the handsets .. and its power related ... the best this is to do 2 things to solve any number of issues....
A: Get a replacment battery, and recharge it fully without turning the phone on. So plug it in and charge it until the white pulsating light is fully lit and not 'breathing' ..as they say. Once fully charged then turn on your phone...
B: Once on ... 'hardware' reset it -  (you turn on the phone, holding the volume down button, and the hang up button and pressing the 'software reset button, at the same time)  
Should solve it ... IF it dosent .. and your getting the same issues after battery replacment, software and hardware resets ...you've basically got a 'hardware' issue with the phone in which case you need a replacment or repair... (make sure your phone is insured)
Hope that helps folks...
p.s. My phone eventually stopped charging ...nothing, no power so i sent it back for a replacment which im waiting for to arrive...